[PATCH] D131314: [clang] format string checks for `InitListExpr`

[Aaron Ballman via Phabricator via cfe-commits]

aaron.ballman added a comment.

In D131314#3707131 <https://reviews.llvm.org/D131314#3707131>, @inclyc wrote:

> ping

FWIW, we usually only ping a review that hasn't had any activity in a week or more (it's not uncommon for reviews to sit for a few days while people think about them or reviewers are busy on other stuff).

I've not had the chance to do an in-depth review yet, but I have two thoughts I can share early on. I think you can simplify the patch a little bit by treating a string literal and an initializer list the same way (using an iterator to walk over the elements) instead of ginning up a fake `StringLiteral` AST node (that's a very heavy handed way to implement this). However, even with that simplification, I'm not certain the use cases for the diagnostic happen enough to warrant this large of a change in how we process format strings. I had encouraged such a diagnostic given the equivalence of the construct with string literals, but I was imagining that the support would be a few lines of code rather than anything substantial like this. Perhaps you can find a way to make the changes less invasive, but if not, I think we may want to hold off on this change until a user files an issue pointing out some real world code that would be easier to fix if they had such a diagnostic.


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